Back to EveryPatent.com
United States Patent | 5,170,450 |
Dahlgren | December 8, 1992 |
A fiber optic coupler and method of manufacture of same in which a single core optical fiber is twisted about a dual core optical fiber and is heated to softening while drawing the melted junction out to form a biconical taper for providing a controlled splitting ratio for light from the single optical fiber into the dual core fiber. In another embodiment two single core fibers are fused to form a dual core fiber without coupling between the cores.
Inventors: | Dahlgren; Robert P. (Somerville, MA) |
Assignee: | The Charles Stark Draper Laboratory, Inc. (Cambridge, MA) |
Appl. No.: | 679798 |
Filed: | April 3, 1991 |
Current U.S. Class: | 385/43; 385/42 |
Intern'l Class: | G02B 006/26 |
Field of Search: | 350/96.15,96.20 385/15,31,42,43,30,39,125,126 |
4315666 | Feb., 1982 | Hicks, Jr. | 350/96. |
4669814 | Jun., 1987 | Dyott | 350/96. |
4676583 | Jun., 1987 | Hicks, Jr. | 350/96. |
5013117 | May., 1991 | Fukuma | 350/96. |
S. B. Poole & J. D. Love, "Single-Core Fibre to Twin-Core Fibre Connector", Electronics Letters, vol. 27, No. 17, pp. 1559-1560 (15 Aug. 1990). |